2 // RMAC - Reboot's Macro Assembler for all Atari computers
3 // DIRECT.C - Directive Handling
4 // Copyright (C) 199x Landon Dyer, 2011-2020 Reboot and Friends
5 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
6 // Source utilised with the kind permission of Landon Dyer
30 TOKEN exprbuf[128]; // Expression buffer
31 SYM * symbolPtr[1000000]; // Symbol pointers table
32 static long unused; // For supressing 'write' warnings
33 char buffer[256]; // Scratch buffer for messages
34 int largestAlign[3] = { 2, 2, 2 }; // Largest alignment value seen per section
36 // Function prototypes
73 int d_equrundef(void);
85 void SetLargestAlignment(int);
87 // Directive handler table
98 (void *)d_init, // 9 init
100 (void *)d_goto, // 11 goto
101 (void *)d_dc, // 12 dc
102 (void *)d_ds, // 13 ds
103 d_undmac, // 14 undefmac
106 (void *)d_dcb, // 17 dcb
110 d_incbin, // 21 .incbin //load
111 d_unimpl, // 22 disable
112 d_unimpl, // 23 enable
114 d_regbank0, // 25 .regbank0
115 d_regbank1, // 26 .regbank1
117 d_assert, // 28 assert
119 d_unimpl, // 30* endif
120 d_unimpl, // 31* endc
122 d_include, // 33 include
124 d_unimpl, // 35* macro
125 ExitMacro, // 36* exitm
126 d_unimpl, // 37* endm
130 d_phrase, // 41* endr
131 d_dphrase, // 42 struct
132 d_qphrase, // 43 ends
134 d_subttl, // 45 subttl
138 d_noclear, // 49 .noclear
139 d_equrundef, // 50 .equrundef/.regundef
140 d_ccundef, // 51 .ccundef
141 d_print, // 52 .print
142 d_cstruct, // 53 .cstruct
143 d_jpad, // 54 .jpad (deprecated)
144 d_nojpad, // 55 .nojpad (deprecated)
145 d_gpumain, // 56 .gpumain (deprecated)
146 d_prgflags, // 57 .prgflags
147 d_68020, // 58 .68020
148 d_68030, // 59 .68030
149 d_68040, // 60 .68040
150 d_68060, // 61 .68060
151 d_68881, // 62 .68881
152 d_68882, // 63 .68882
153 d_56001, // 64 .56001
156 d_objproc, // 67 .objproc
157 (void *)d_dsm, // 68 .dsm
162 // Set the largest alignment seen in the current section
164 void SetLargestAlignment(int size)
166 if ((scattr & TEXT) && (largestAlign[0] < size))
167 largestAlign[0] = size;
168 else if ((scattr & DATA) && (largestAlign[1] < size))
169 largestAlign[1] = size;
170 else if ((scattr & BSS) && (largestAlign[2] < size))
171 largestAlign[2] = size;
176 // .error - Abort compilation, printing an error message
178 int d_error(char *str)
181 return error("error directive encountered - aborting assembling");
187 return error(string[tok[1]]);
190 return error("error directive encountered--aborting assembly");
197 // .warn - Just display a warning on screen
199 int d_warn(char *str)
202 return warn("WARNING WARNING WARNING");
208 return warn(string[tok[1]]);
211 return warn("WARNING WARNING WARNING");
224 if (!rgpu && !rdsp && !robjproc && !m6502 && !dsp56001 && !(obj_format == RAW))
225 return error(".org permitted only in GPU/DSP/OP, 56001, 6502 and 68k (with -fr switch) sections");
227 // M56K can leave the expression off the org for some reason :-/
228 // (It's because the expression is non-standard, and so we have to look at
230 if (!dsp56001 && (abs_expr(&address) == ERROR))
232 error("cannot determine org'd address");
236 if (rgpu | rdsp | robjproc)
243 // 6502. We also kludge 'lsloc' so the listing generator doesn't try
244 // to spew out megabytes.
245 if (address > 0xFFFF)
246 return error(range_error);
248 if (sloc != currentorg[0])
250 currentorg[1] = sloc;
254 currentorg[0] = address;
256 lsloc = sloc = address;
257 chptr = scode->chptr + address;
263 // Only mark segments we actually wrote something
264 if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
266 dsp_currentorg->end = chptr;
270 // Maybe we switched from a non-DSP section (TEXT, DATA, etc) and
271 // scode isn't initialised yet. Not that it's going to be a valid
272 // scenario, but if we try it anyhow it's going to lead to a crash. So
273 // let's fudge a value of 0 and get on with it.
274 orgaddr = (scode != NULL ? sloc : 0);
278 return error(syntax_error);
280 int sectionToSwitch = 0;
285 dsp_currentorg->memtype = ORG_X;
286 sectionToSwitch = M56001X;
290 dsp_currentorg->memtype = ORG_Y;
291 sectionToSwitch = M56001Y;
295 dsp_currentorg->memtype = ORG_P;
296 sectionToSwitch = M56001P;
300 dsp_currentorg->memtype = ORG_L;
301 sectionToSwitch = M56001L;
305 return error("unknown type in ORG");
308 if ((obj_format == LOD) || (obj_format == P56))
309 SwitchSection(sectionToSwitch);
312 chcheck(3); // Ensure we got a valid address to write
313 dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
317 // Well, the user didn't specify an address at all so we'll have to
318 // use the last used address of that section (or 0 if there wasn't one)
320 dsp_currentorg->start = chptr;
321 dsp_currentorg->orgadr = orgaddr;
325 if (abs_expr(&address) == ERROR)
327 error("cannot determine org'd address");
331 dsp_currentorg->start = chptr;
332 dsp_currentorg->orgadr = (uint32_t)address;
333 sect[cursect].orgaddr = (uint32_t)address;
336 if (address > DSP_MAX_RAM)
338 return error(range_error);
341 dsp_written_data_in_current_org = 0;
343 // Copied from 6502 above: kludge `lsloc' so the listing generator
344 // doesn't try to spew out megabytes.
345 lsloc = sloc = (int32_t)address;
346 // N.B.: It seems that by enabling this, even though it works elsewhere, will cause symbols to royally fuck up. Will have to do some digging to figure out why.
351 // If we get here we assume it's 68k with RAW output, so this is allowed
354 return error("In 68k mode only one .org statement is allowed");
357 org68k_address = address;
371 char prntstr[LNSIZ]; // String for PRINT directive
372 char format[LNSIZ]; // Format for PRINT directive
373 int formatting = 0; // Formatting on/off
374 int wordlong = 0; // WORD = 0, LONG = 1
375 int outtype = 0; // 0:hex, 1:decimal, 2:unsigned
377 uint64_t eval; // Expression value
378 WORD eattr; // Expression attributes
379 SYM * esym; // External symbol involved in expr.
380 TOKEN r_expr[EXPRSIZE];
387 sprintf(prntstr, "%s", string[tok[1]]);
388 printf("%s", prntstr);
391 unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
398 // "X" & "L" get tokenized now... :-/ Probably should look into preventing this kind of thing from happening (was added with DSP56K code)
399 if ((tok[1] != SYMBOL) && (tok[1] != KW_L) && (tok[1] != KW_X))
407 else if (tok[1] == KW_X)
414 strcpy(prntstr, string[tok[2]]);
418 case 'l': case 'L': wordlong = 1; break;
419 case 'w': case 'W': wordlong = 0; break;
420 case 'x': case 'X': outtype = 0; break;
421 case 'd': case 'D': outtype = 1; break;
422 case 'u': case 'U': outtype = 2; break;
424 error("unknown print format flag");
436 if (expr(r_expr, &eval, &eattr, &esym) != OK)
442 case 0: strcpy(format, "%X"); break;
443 case 1: strcpy(format, "%d" ); break;
444 case 2: strcpy(format, "%u" ); break;
448 sprintf(prntstr, format, eval);
450 sprintf(prntstr, format, eval & 0xFFFF);
452 printf("%s", prntstr);
455 unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
471 error("illegal print token [@ '%s']", prntstr);
477 // Undefine an equated condition code
483 // Check that we are in a RISC section
486 error(".ccundef must be defined in .gpu/.dsp section");
492 error("syntax error; expected symbol");
496 ccname = lookup(string[tok[1]], LABEL, 0);
498 // Make sure symbol is a valid ccdef
499 if (!ccname || !(ccname->sattre & EQUATEDCC))
501 error("invalid equated condition name specified");
505 ccname->sattre |= UNDEF_CC;
512 // Undefine an equated register
514 int d_equrundef(void)
518 // Check that we are in a RISC section
520 return error(".equrundef/.regundef must be defined in .gpu/.dsp section");
524 // Skip preceeding or seperating commas (if any)
528 // Check we are dealing with a symbol
530 return error("syntax error; expected symbol");
532 // Lookup and undef if equated register
533 regname = lookup(string[tok[1]], LABEL, 0);
535 if (regname && (regname->sattre & EQUATEDREG))
537 // Reset the attributes of this symbol...
539 regname->sattre &= ~(EQUATEDREG | BANK_0 | BANK_1);
540 regname->sattre |= UNDEF_EQUR;
543 // Skip over symbol token and address
552 // Do not allow use of the CLR.L opcode
556 warn("CLR.L opcode ignored...");
562 // Include binary file
568 uint64_t pos, size, bytesRead;
572 // Check to see if we're in BSS, and, if so, throw an error
575 error("cannot include binary file \"%s\" in BSS section", string[tok[1]]);
581 error("syntax error; file to include missing");
585 // Attempt to open the include file in the current directory, then (if that
586 // failed) try list of include files passed in the enviroment string or by
588 TOKEN filename = tok[1];
589 if ((fd = open(string[filename], _OPEN_INC)) < 0)
591 for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
595 // Append path char if necessary
596 if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
597 strcat(buf1, SLASHSTRING);
599 strcat(buf1, string[filename]);
601 if ((fd = open(buf1, _OPEN_INC)) >= 0)
605 return error("cannot open: \"%s\"", string[filename]);
613 // Check size parameter (can be omitted)
618 if (abs_expr(&size) != OK)
625 size = lseek(fd, 0L, SEEK_END);
628 // Check offset parameter (can be omitted)
635 if (abs_expr(&pos) != OK)
640 lseek(fd, pos, SEEK_SET);
645 // offset parameter omitted, so it's 0
646 pos = lseek(fd, 0L, SEEK_SET);
653 pos = lseek(fd, 0L, SEEK_SET);
657 //size_pos_fallthrough:
658 size = lseek(fd, 0L, SEEK_END);
659 pos = lseek(fd, 0L, SEEK_SET);
663 DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[filename], size); }
665 char * fileBuffer = (char *)malloc(size);
666 bytesRead = read(fd, fileBuffer, size);
668 if (bytesRead != size)
670 error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[filename], size);
674 memcpy(chptr, fileBuffer, size);
689 // Set RISC register banks
693 // Set active register bank zero
701 // Set active register bank one
708 // Helper function, to cut down on mistakes & typing
710 static inline void SkipBytes(unsigned bytesToSkip)
715 if ((scattr & SBSS) == 0)
717 chcheck(bytesToSkip);
718 D_ZEROFILL(bytesToSkip);
725 orgaddr += bytesToSkip;
731 // Adjust location to an EVEN value
736 return error(in_6502mode);
738 unsigned skip = (rgpu || rdsp ? orgaddr : sloc) & 0x01;
742 if ((scattr & SBSS) == 0)
761 // Adjust location to a LONG value
765 unsigned lower2Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x03;
766 unsigned bytesToSkip = (0x04 - lower2Bits) & 0x03;
767 SkipBytes(bytesToSkip);
768 SetLargestAlignment(4);
775 // Adjust location to a PHRASE value
777 // N.B.: We have to handle the GPU/DSP cases separately because you can embed
778 // RISC code in the middle of a regular 68K section. Also note that all
779 // of the alignment pseudo-ops will have to be fixed this way.
781 // This *must* behave differently when in a RISC section, as following sloc
782 // (instead of orgaddr) will fuck things up royally. Note that we do it this
783 // way because you can embed RISC code in a 68K section, and have the origin
784 // pointing to a different alignment in the RISC section than the 68K section.
788 unsigned lower3Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x07;
789 unsigned bytesToSkip = (0x08 - lower3Bits) & 0x07;
790 SkipBytes(bytesToSkip);
791 SetLargestAlignment(8);
798 // Adjust location to a DPHRASE value
802 unsigned lower4Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x0F;
803 unsigned bytesToSkip = (0x10 - lower4Bits) & 0x0F;
804 SkipBytes(bytesToSkip);
805 SetLargestAlignment(16);
812 // Adjust location to a QPHRASE value
816 unsigned lower5Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x1F;
817 unsigned bytesToSkip = (0x20 - lower5Bits) & 0x1F;
818 SkipBytes(bytesToSkip);
819 SetLargestAlignment(32);
826 // Do auto-even. This must be called ONLY if 'sloc' is odd.
828 // This is made hairy because, if there was a label on the line, we also have
829 // to adjust its value. This won't work with more than one label on the line,
830 // which is OK since multiple labels are only allowed in AS68 kludge mode, and
831 // the C compiler is VERY paranoid and uses ".even" whenever it can
833 // N.B.: This probably needs the same fixes as above...
837 if (cursect != M6502)
840 sloc++; // Bump BSS section
842 D_byte(0); // Deposit 0.b in non-BSS
844 if (lab_sym != NULL) // Bump label if we have to
851 // Unimplemened directive error
855 return error("unimplemented directive");
860 // Return absolute (not TDB) and defined expression or return an error
862 int abs_expr(uint64_t * a_eval)
866 if (expr(exprbuf, a_eval, &eattr, NULL) < 0)
869 if (!(eattr & DEFINED))
870 return error(undef_error);
873 return error(rel_error);
880 // Hand symbols in a symbol-list to a function (kind of like mapcar...)
882 int symlist(int(* func)())
884 const char * em = "symbol list syntax";
891 if ((*func)(string[tok[1]]) != OK)
910 // .include "filename"
920 if (*tok == STRING) // Leave strings ALONE
922 else if (*tok == SYMBOL) // Try to append ".s" to symbols
924 strcpy(buf, string[*++tok]);
928 else // Punt if no STRING or SYMBOL
929 return error("missing filename");
931 // Make sure the user didn't try anything like:
932 // .include equates.s
934 return error("extra stuff after filename--enclose it in quotes");
936 // Attempt to open the include file in the current directory, then (if that
937 // failed) try list of include files passed in the enviroment string or by
939 if ((j = open(fn, 0)) < 0)
941 for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
945 // Append path char if necessary
946 if (j > 0 && buf1[j - 1] != SLASHCHAR)
947 strcat(buf1, SLASHSTRING);
951 if ((j = open(buf1, 0)) >= 0)
955 return error("cannot open: \"%s\"", fn);
965 // .assert expression [, expression...]
972 for(; expr(exprbuf, &eval, &eattr, NULL)==OK; ++tok)
974 if (!(eattr & DEFINED))
975 return error("forward or undefined .assert");
978 return error("assert failure");
990 // .globl symbol [, symbol] <<<cannot make local symbols global>>>
997 return error("cannot .globl local symbol");
999 if ((sy = lookup(p, LABEL, 0)) == NULL)
1001 sy = NewSymbol(p, LABEL, 0);
1004 //printf("glob1: Making global symbol: attr=%04X, eattr=%08X, %s\n", sy->sattr, sy->sattre, sy->sname);
1007 sy->sattr |= GLOBAL;
1016 return error(in_6502mode);
1024 // .prgflags expression
1026 int d_prgflags(void)
1031 return error("PRGFLAGS requires value");
1032 else if (abs_expr(&eval) == OK)
1034 PRGFLAGS = (uint32_t)eval;
1039 return error("PRGFLAGS requires value");
1045 // .abs [expression]
1052 return error(in_6502mode);
1058 else if (abs_expr(&eval) != OK)
1062 sloc = (uint32_t)eval;
1073 return error("directive forbidden in gpu/dsp mode");
1075 return error(in_6502mode);
1077 if (cursect != TEXT)
1080 SwitchSection(TEXT);
1090 return error("directive forbidden in gpu/dsp mode");
1092 return error(in_6502mode);
1094 if (cursect != DATA)
1097 SwitchSection(DATA);
1107 return error("directive forbidden in gpu/dsp mode");
1109 return error(in_6502mode);
1122 // .ds[.size] expression
1126 DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
1130 if ((cursect & (M6502 | M56KPXYL)) == 0)
1132 if ((siz != SIZB) && (sloc & 1)) // Automatic .even
1136 if (abs_expr(&eval) != OK)
1139 // Check to see if the value being passed in is negative (who the hell does
1140 // that?--nobody does; it's the code gremlins, or rum, what does it)
1141 // N.B.: Since 'eval' is of type uint64_t, if it goes negative, it will
1142 // have its high bit set.
1143 if (eval & 0x8000000000000000)
1144 return error("negative sizes not allowed in DS");
1146 // In non-TDB section (BSS, ABS and M6502) just advance the location
1147 // counter appropriately. In TDB sections, deposit (possibly large) chunks
1148 // of zeroed memory....
1149 if ((scattr & SBSS) || cursect == M6502)
1151 listvalue((uint32_t)eval);
1153 sloc += (uint32_t)eval;
1155 if (cursect == M6502)
1158 just_bss = 1; // No data deposited (8-bit CPU mode)
1160 else if (cursect & M56KPXYL)
1162 // Change segment instead of marking blanks.
1163 // Only mark segments we actually wrote something
1164 if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
1166 dsp_currentorg->end = chptr;
1168 dsp_currentorg->memtype = dsp_currentorg[-1].memtype;
1171 listvalue((uint32_t)eval);
1172 sloc += (uint32_t)eval;
1174 // And now let's create a new segment
1175 dsp_currentorg->start = chptr;
1176 dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
1177 sect[cursect].orgaddr = sloc;
1178 dsp_currentorg->orgadr = sloc;
1179 dsp_written_data_in_current_org = 0;
1181 just_bss = 1; // No data deposited
1185 dep_block(eval, siz, 0, (DEFINED | ABS), NULL);
1194 // dsm[.siz] expression
1195 // Define modulo storage
1196 // Quoting the Motorola assembler manual:
1197 // "The DSM directive reserves a block of memory the length of which in words is equal to
1198 // the value of <expression>.If the runtime location counter is not zero, this directive first
1199 // advances the runtime location counter to a base address that is a multiple of 2k, where
1200 // 2k >= <expression>."
1201 // The kicker of course is written a few sentences after:
1202 // "<label>, if present, will be assigned the value of the runtime location counter after a valid
1203 // base address has been established."
1207 TOKEN * tok_current = tok; // Keep track of where tok was when we entered this procedure
1210 if (abs_expr(&eval) != OK)
1213 // Round up to the next highest power of 2
1214 // Nicked from https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
1223 units_to_skip = eval + 1 - sloc;
1224 sloc += units_to_skip; // Bump up sloc - TODO: check if this goes over the RAM limits?
1226 // If a label has been defined in the same line as dsm, its value also needs to be adjusted
1229 SYM * label = lookup(label_defined, LABEL, 0);
1230 label->svalue += units_to_skip;
1233 tok = tok_current; // Rewind tok back to where it was
1234 return d_ds(siz); // And let d_ds take over from here
1239 // dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d, dc.s, dc.x
1247 if ((scattr & SBSS) != 0)
1248 return error("illegal initialization of section");
1250 // Do an auto_even if it's not BYTE sized (hmm, should we be doing this???)
1251 if ((cursect != M6502) && (cursect != M56001P) && (cursect != M56001X)
1252 && (cursect != M56001Y) && (cursect != M56001L)
1253 && (siz != SIZB) && (sloc & 1))
1256 // Check to see if we're trying to set LONGS on a non 32-bit aligned
1257 // address in a GPU or DSP section, in their local RAM
1258 if ((siz == SIZL) && (orgaddr & 0x03)
1259 && ((rgpu && (orgaddr >= 0xF03000) && (orgaddr <= 0xF03FFFF))
1260 || (rdsp && (orgaddr >= 0xF1B000) && (orgaddr <= 0xF1CFFFF))))
1261 warn("depositing LONGs on a non-long address in local RAM");
1265 // dc.b 'string' [,] ...
1266 if (siz == SIZB && (*tok == STRING || *tok == STRINGA8) && (tok[2] == ',' || tok[2] == EOL))
1268 uint32_t i = strlen(string[tok[1]]);
1270 if ((challoc - ch_size) < i)
1275 for(p=string[tok[1]]; *p!=EOS; p++)
1278 else if (*tok == STRINGA8)
1280 for(p=string[tok[1]]; *p!=EOS; p++)
1281 D_byte(strtoa8[*p]);
1285 error("String format not supported... yet");
1292 int movei = 0; // MOVEI flag for dc.i
1301 // dc.x <expression>
1304 if (expr(exprbuf, &eval, &eattr, &esym) != OK)
1307 uint16_t tdb = eattr & TDB;
1308 uint16_t defined = eattr & DEFINED;
1310 // N.B.: This is awful. This needs better handling, rather than just bodging something in that, while works, is basically an ugly wart on the assembler. !!! FIX !!!
1313 if (cursect != M56001L)
1317 AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
1324 double fval = *(double *)&eval;
1325 eval = DoubleToDSPFloat(fval);
1329 if ((uint32_t)eval + 0x1000000 >= 0x2000000)
1330 return error(range_error);
1333 // Deposit DSP word (24-bit)
1339 // In L: we deposit stuff to both X: and Y: instead
1340 // We will be a bit lazy and require that there is a 2nd value
1341 // in the same source line. (Motorola's assembler can parse
1342 // 12-digit hex values, which we can't do at the moment) This
1343 // of course requires to parse 2 values in one pass. If there
1344 // isn't another value in this line, assume X: value is 0.
1351 AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
1358 float fval = *(float *)&eval;
1359 eval = DoubleToDSPFloat(fval);
1363 if (eval + 0x1000000 >= 0x2000000)
1364 return error(range_error);
1367 // Parse 2nd value if we didn't do this yet
1368 if (secondword == 0)
1370 evaly = (uint32_t)eval;
1375 // If we don't have a : then we're probably at EOL,
1376 // which means the X: value will be 0
1382 tok++; // Eat the comma;
1384 if (expr(exprbuf, &eval, &eattr, NULL) != OK)
1387 defined = (WORD)(eattr & DEFINED);
1392 // Deposit DSP words (24-bit)
1395 sloc--; // We do write 2 DSP words but as far as L: space is concerned we actually advance our counter by one
1408 AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
1414 return error("non-absolute byte value");
1416 if (eval + 0x100 >= 0x200)
1417 return error("%s (value = $%X)", range_error, eval);
1428 AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
1433 if (eval + 0x10000 >= 0x20000)
1434 return error(range_error);
1437 MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
1439 // Deposit 68000 or 6502 (byte-reversed) word
1440 if (cursect != M6502)
1449 // Shamus: Why can't we do longs in 6502 mode?
1451 return error(in_6502mode);
1455 AddFixup(FU_LONG | (movei ? FU_MOVEI : 0), sloc, exprbuf);
1461 MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
1464 eval = WORDSWAP32(eval);
1474 return error(in_6502mode);
1476 // DEFINITELY NEED FIXUPS HERE!
1479 AddFixup(FU_QUAD, sloc, exprbuf);
1487 // 32-bit float size
1489 return error(in_6502mode);
1491 /* Seems to me that if something is undefined here, then that should be an error. Likewise for the D & X variants. */
1494 // AddFixup(FU_FLOATSING, sloc, exprbuf);
1496 return error("labels not allowed in floating point expressions");
1500 //Would this *ever* happen?
1502 // MarkRelocatable(cursect, sloc, tdb, MSINGLE, NULL);
1506 uint32_t ieee754 = FloatToIEEE754((float)*ptr.dp);
1513 // 64-bit double size
1515 return error(in_6502mode);
1519 // AddFixup(FU_FLOATDOUB, sloc, exprbuf);
1521 return error("labels not allowed in floating point expressions");
1525 //Would this *ever* happen?
1527 // MarkRelocatable(cursect, sloc, tdb, MDOUBLE, NULL);
1531 uint64_t ieee754 = DoubleToIEEE754(*ptr.dp);
1539 return error(in_6502mode);
1542 memset(extDbl, 0, 12);
1546 // AddFixup(FU_FLOATEXT, sloc, exprbuf);
1547 // D_extend(extDbl);
1548 return error("labels not allowed in floating point expressions");
1552 //Would this *ever* happen?
1554 // MarkRelocatable(cursect, sloc, tdb, MEXTEND, NULL);
1558 DoubleToExtended(*ptr.dp, extDbl);
1576 // dcb[.siz] expr1,expr2 - Make 'expr1' copies of 'expr2'
1580 uint64_t evalc, eval;
1583 DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
1585 if ((scattr & SBSS) != 0)
1586 return error("illegal initialization of section");
1588 if (abs_expr(&evalc) != OK)
1592 return error("missing comma");
1594 if (expr(exprbuf, &eval, &eattr, NULL) < 0)
1597 if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
1600 dep_block((uint32_t)evalc, siz, (uint32_t)eval, eattr, exprbuf);
1606 // Generalized initialization directive
1608 // .init[.siz] [#count,] expression [.size] , ...
1610 // The size suffix on the ".init" directive becomes the default size of the
1611 // objects to deposit. If an item is preceeded with a sharp (immediate) sign
1612 // and an expression, it specifies a repeat count. The value to be deposited
1613 // may be followed by a size suffix, which overrides the default size.
1615 int d_init(WORD def_siz)
1622 if ((scattr & SBSS) != 0)
1623 return error(".init not permitted in BSS or ABS");
1626 return error("directive forbidden in gpu/dsp mode");
1630 // Get repeat count (defaults to 1)
1635 if (abs_expr(&count) != OK)
1639 return error(comma_error);
1644 // Evaluate expression to deposit
1645 if (expr(exprbuf, &eval, &eattr, NULL) < 0)
1649 { // Determine size of object to deposit
1650 case DOTB: siz = SIZB; break;
1651 case DOTW: siz = SIZB; break;
1652 case DOTL: siz = SIZL; break;
1659 dep_block((uint32_t)count, siz, (uint32_t)eval, eattr, exprbuf);
1669 return error(comma_error);
1676 // Deposit 'count' values of size 'siz' in the current (non-BSS) segment
1678 int dep_block(uint32_t count, WORD siz, uint32_t eval, WORD eattr, TOKEN * exprbuf)
1680 WORD tdb = eattr & TDB;
1681 WORD defined = eattr & DEFINED;
1685 if ((challoc - ch_size) < 4)
1693 AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
1699 return error("non-absolute byte value");
1701 if (eval + 0x100 >= 0x200)
1702 return error(range_error);
1712 AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
1718 MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
1720 if (eval + 0x10000 >= 0x20000)
1721 return error(range_error);
1723 // Deposit 68000 or 6502 (byte-reversed) word
1724 if (cursect != M6502)
1734 return error(in_6502mode);
1738 AddFixup(FU_LONG, sloc, exprbuf);
1744 MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
1758 // .comm symbol, size
1767 return error(in_6502mode);
1770 return error("missing symbol");
1775 if (*p == '.') // Cannot .comm a local symbol
1776 return error(locgl_error);
1778 if ((sym = lookup(p, LABEL, 0)) == NULL)
1779 sym = NewSymbol(p, LABEL, 0);
1782 if (sym->sattr & DEFINED)
1783 return error(".comm symbol already defined");
1786 sym->sattr = GLOBAL | COMMON | BSS;
1789 return error(comma_error);
1791 if (abs_expr(&eval) != OK) // Parse size of common region
1794 sym->svalue = eval; // Install common symbol's size
1801 // .list - Turn listing on
1813 // .nlist - Turn listing off
1825 // .68000 - Back to 68000 TEXT segment
1829 rgpu = rdsp = robjproc = dsp56001 = 0;
1830 // Switching from gpu/dsp sections should reset any ORG'd Address
1834 SwitchSection(TEXT);
1835 activecpu = CPU_68000;
1841 // .68020 - Back to 68000 TEXT segment and select 68020
1846 activecpu = CPU_68020;
1852 // .68030 - Back to 68000 TEXT segment and select 68030
1857 activecpu = CPU_68030;
1863 // .68040 - Back to 68000 TEXT segment and select 68040
1868 activecpu = CPU_68040;
1869 activefpu = FPU_68040;
1875 // .68060 - Back to 68000 TEXT segment and select 68060
1880 activecpu = CPU_68060;
1881 activefpu = FPU_68060;
1887 // .68881 - Back to 680x0 TEXT segment and select 68881 FPU
1892 activefpu = FPU_68881;
1898 // .68882 - Back to 680x0 TEXT segment and select 68882 FPU
1903 activefpu = FPU_68882;
1909 // nofpu - Deselect FPUs.
1913 activefpu = FPU_NONE;
1919 // .56001 - Switch to DSP56001 assembler
1924 rgpu = rdsp = robjproc = 0;
1927 if ((obj_format == LOD) || (obj_format == P56))
1928 SwitchSection(M56001P);
1935 // .gpu - Switch to GPU assembler
1939 if ((cursect != TEXT) && (cursect != DATA))
1941 error(".gpu can only be used in the TEXT or DATA segments");
1945 // If previous section was DSP or 68000 then we need to reset ORG'd Addresses
1952 rgpu = 1; // Set GPU assembly
1953 rdsp = 0; // Unset DSP assembly
1954 robjproc = 0; // Unset OP assembly
1955 dsp56001 = 0; // Unset 56001 assembly
1956 regbank = BANK_N; // Set no default register bank
1962 // .dsp - Switch to DSP assembler
1966 if ((cursect != TEXT) && (cursect != DATA))
1968 error(".dsp can only be used in the TEXT or DATA segments");
1972 // If previous section was gpu or 68000 then we need to reset ORG'd Addresses
1979 rdsp = 1; // Set DSP assembly
1980 rgpu = 0; // Unset GPU assembly
1981 robjproc = 0; // Unset OP assembly
1982 dsp56001 = 0; // Unset 56001 assembly
1983 regbank = BANK_N; // Set no default register bank
1989 // .cargs [#offset], symbol[.size], ...
1991 // Lists of registers may also be mentioned; they just take up space. Good for
1992 // "documentation" purposes:
1994 // .cargs a6, .arg1, .arg2, .arg3...
1996 // Symbols thus created are ABS and EQUATED.
2000 uint64_t eval = 4; // Default to 4 if no offset specified (to account for
2009 return error("directive forbidden in gpu/dsp mode");
2015 if (abs_expr(&eval) != OK)
2018 // Eat the comma, if it's there
2029 // Set env to either local (dot prefixed) or global scope
2030 env = (*p == '.' ? curenv : 0);
2031 symbol = lookup(p, LABEL, env);
2035 symbol = NewSymbol(p, LABEL, env);
2038 else if (symbol->sattr & DEFINED)
2039 return error("multiply-defined label '%s'", p);
2041 // Put symbol in "order of definition" list
2042 AddToSymbolDeclarationList(symbol);
2044 symbol->sattr |= (ABS | DEFINED | EQUATED);
2045 symbol->svalue = eval;
2048 // What this does is eat any dot suffixes attached to a symbol. If
2049 // it's a .L, it adds 4 to eval; if it's .W or .B, it adds 2. If
2050 // there is no dot suffix, it assumes a size of 2.
2062 else if (*tok >= KW_D0 && *tok <= KW_A7)
2064 if (reglist(&rlist) < 0)
2067 for(i=0; i<16; i++, rlist>>=1)
2090 return error(".cargs syntax");
2094 // Eat commas in between each argument, if they exist
2102 // .cstruct [#offset], symbol[.size], ...
2104 // Lists of registers may also be mentioned; they just take up space. Good for
2105 // "documentation" purposes:
2107 // .cstruct a6, .arg1, .arg2, .arg3...
2109 // Symbols thus created are ABS and EQUATED. Note that this is for
2110 // compatibility with VBCC and the Remover's library. Thanks to GroovyBee for
2115 uint64_t eval = 0; // Default, if no offset specified, is zero
2123 return error("directive forbidden in gpu/dsp mode");
2129 if (abs_expr(&eval) != OK)
2132 // Eat the comma, if it's there
2141 symbolName = string[tok[1]];
2143 // Set env to either local (dot prefixed) or global scope
2144 env = (symbolName[0] == '.' ? curenv : 0);
2145 symbol = lookup(symbolName, LABEL, env);
2147 // If the symbol wasn't found, then define it. Otherwise, throw an
2151 symbol = NewSymbol(symbolName, LABEL, env);
2154 else if (symbol->sattr & DEFINED)
2155 return error("multiply-defined label '%s'", symbolName);
2157 // Put symbol in "order of definition" list
2158 AddToSymbolDeclarationList(symbol);
2162 // Adjust label start address if it's a word or a long, as a byte
2163 // label might have left us on an odd address.
2168 eval += eval & 0x01;
2171 symbol->sattr |= (ABS | DEFINED | EQUATED);
2172 symbol->svalue = eval;
2174 // Check for dot suffixes and adjust space accordingly (longs and
2175 // words on an odd boundary get bumped to the next word aligned
2176 // address). If no suffix, then throw an error.
2189 return error("Symbol missing dot suffix in .cstruct construct");
2194 else if (*tok >= KW_D0 && *tok <= KW_A7)
2196 if (reglist(&rlist) < 0)
2199 for(i=0; i<16; i++, rlist>>=1)
2222 return error(".cstruct syntax");
2226 // Eat commas in between each argument, if they exist
2234 // Define start of OP object list (allows the use of ORG)
2238 if ((cursect != TEXT) && (cursect != DATA))
2240 error(".objproc can only be used in the TEXT or DATA segments");
2244 // If previous section was DSP or 68000 then we need to reset ORG'd
2252 robjproc = 1; // Set OP assembly
2253 rgpu = 0; // Unset GPU assembly
2254 rdsp = 0; // Unset DSP assembly
2255 dsp56001 = 0; // Unset 56001 assembly
2261 // Undefine a macro - .undefmac macname [, macname...]
2263 int undmac1(char * p)
2265 SYM * symbol = lookup(p, MACRO, 0);
2267 // If the macro symbol exists, cause it to disappear
2269 symbol->stype = (BYTE)SY_UNDEF;
2284 warn("JPAD directive is deprecated/non-functional");
2291 warn("NOJPAD directive is deprecated/non-functional");
2298 return error("What the hell? Do you think we adhere to the Goof standard?");
2303 // .opt - turn a specific (or all) optimisation on or off
2312 char * tmpstr = string[*tok++];
2314 if (ParseOptimization(tmpstr) != OK)
2315 return error("unknown optimization flag '%s'", tmpstr);
2318 return error(".opt directive needs every switch enclosed inside quotation marks");
2326 // .if, Start conditional assembly
2333 IFENT * rif = f_ifent;
2337 rif = (IFENT *)malloc(sizeof(IFENT));
2339 f_ifent = rif->if_prev;
2341 rif->if_prev = ifent;
2346 if (expr(exprbuf, &eval, &eattr, &esym) != OK)
2349 if ((eattr & DEFINED) == 0)
2350 return error(undef_error);
2355 rif->if_state = (WORD)disabled;
2361 // .else, Do alternate case for .if
2365 IFENT * rif = ifent;
2367 if (rif->if_prev == NULL)
2368 return error("mismatched .else");
2371 disabled = rif->if_prev->if_state;
2375 rif->if_state = (WORD)disabled;
2381 // .endif, End of conditional assembly block
2382 // This is also called by fpop() to pop levels of IFENTs in case a macro or
2383 // include file exits early with `exitm' or `end'.
2387 IFENT * rif = ifent;
2389 if (rif->if_prev == NULL)
2390 return error("mismatched .endif");
2392 ifent = rif->if_prev;
2393 disabled = rif->if_prev->if_state;
2394 rif->if_prev = f_ifent;